On 12/9/2013 5:47 AM, Charles Steinkuehler wrote: > BTW: I'm currently working on a Wally, but this applies also to the GUS > Simpson I'm starting on next: > > http://www.conceptforge.org/
Looks like they could use shims under the build plate corners. Get it level and it should stay level. The Wally design involves much calculation to correct for the vertical arc the build platform moves in. A Sarrus linkage would be easier to build and produces a perfectly straight line motion. Another straight line system is the Peaucellier–Lipkin linkage. Expanding a pair of them horizontally and also vertically offsetting them in such a way that two linkages nest together would hold the platform the same way as the pair of four bar linkages, but with no arc movement to compensate for. I should model a double PL linkage in 3D... http://kmoddl.library.cornell.edu/ <- Tons of mechanical linkages and contrivances to explore. In the 19th century there were many demonstration models made of these linkages, gear trains etc to demonstrate to students how they worked. ------------------------------------------------------------------------------ Sponsored by Intel(R) XDK Develop, test and display web and hybrid apps with a single code base. Download it for free now! http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
